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skybox lut

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This commit is contained in:
minjaesong
2023-08-01 17:22:45 +09:00
parent 451808cd1c
commit 1ac861fa82
4 changed files with 23 additions and 19 deletions
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19
src/net/torvald/terrarum/weather/WeatherMixer.kt
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@@ -195,29 +195,22 @@ internal object WeatherMixer : RNGConsumer {
gdxBlendNormalStraightAlpha()
val degThis = if (timeNow < HALF_DAY)
solarElev.floorToDouble()
else
solarElev.ceilToDouble()
val degNext = degThis + if (timeNow < HALF_DAY) 1 else -1 // Skybox.get has internal coerceIn
val thisTurbidity = forceTurbidity ?: turbidity
// TODO trilinear with (deg, turb, alb)
val texture1 = Skybox[degThis, thisTurbidity, 0.1]
val texture2 = Skybox[degNext, thisTurbidity, 0.1]
val lerpScale = (if (timeNow < HALF_DAY) solarElev - degThis else -(solarElev - degThis)).toFloat()
val texture1 = Skybox.getStrip(thisTurbidity, 0.3)
// println("degThis=$degThis, degNext=$degNext, lerp=$lerpScale")
val stripXcentre = ((solarElev + 75.0) / 150.0).toFloat()
val backMag = texture1.regionWidth * App.scr.wf * 2f
val backX = -stripXcentre * backMag
val gradY = -(gH - App.scr.height) * ((parallax + 1f) / 2f)
batch.inUse {
batch.shader = null
batch.color = Color.WHITE
batch.draw(texture1, -App.scr.halfwf, gradY, 2f * App.scr.wf, gH)
batch.color = Color(1f, 1f, 1f, lerpScale)
batch.draw(texture2, -App.scr.halfwf, gradY, 2f * App.scr.wf, gH)
batch.draw(texture1, backX, gradY, backMag + App.scr.wf, gH)
batch.color = Color.WHITE
}